light clock (#260)

* extend image effects
add a basic light clock

* add alpha values  to rainbow

* some effect tuning

* make seconds hand optional and change color to yellow
make blue hours hand always visible

effects/light-clock.json

@@ -0,0 +1,8 @@
+{
+	"name" : "Light clock",
+	"script" : "light-clock.py",
+	"args" :
+	{
+		"show_seconds" : true
+	}
+}

effects/light-clock.py

@@ -0,0 +1,54 @@
+import hyperion, time, datetime
+
+# Get the parameters
+showSeconds = bool(hyperion.args.get('show_seconds', True))
+centerX     = int(round(hyperion.imageWidth)/2)
+centerY     = int(round(float(hyperion.imageHeight)/2))
+
+colorsSecond = bytearray([
+	0, 255,255,0,255,
+	5, 255,255,0,255,
+	30, 0,0,0,0,
+])
+
+colorsMinute = bytearray([
+	0, 0,255,0,255,
+	5, 0,255,0,250,
+	90, 0,0,0,0,
+	
+])
+
+colorsHour = bytearray([
+	0, 0,0,255,255,
+	10, 0,0,255,255,
+	127, 0,0,196,127,
+	255, 0,0,196,5,
+])
+
+colorsHourTop = bytearray([
+	0, 0,0,255,250,
+	10, 0,0,255,128,
+	20, 0,0,0,0,
+])
+
+# effect loop
+while not hyperion.abort():
+	now = datetime.datetime.now()
+
+	angleH = 449 - 30*(now.hour if now.hour<12 else now.hour-12)
+	angleM = 449 - 6*now.minute
+	angleS = 449 - 6*now.second
+
+	angleH -= 0 if angleH<360 else 360
+	angleM -= 0 if angleM<360 else 360
+	angleS -= 0 if angleS<360 else 360
+
+	hyperion.imageSolidFill(127,127,127);
+	hyperion.imageCanonicalGradient(centerX, centerY, angleH, colorsHour)
+	hyperion.imageCanonicalGradient(centerX, centerY, angleM, colorsMinute)
+	hyperion.imageCanonicalGradient(centerX, centerY, angleH, colorsHourTop)
+	if showSeconds:
+		hyperion.imageCanonicalGradient(centerX, centerY, angleS, colorsSecond)
+
+	hyperion.imageShow()
+	time.sleep(0.01 )

effects/rainbow-swirl.py

@@ -14,15 +14,22 @@ increment = -1 if reverse else 1
 
 # table of stop colors for rainbow gradient, first is the position, next rgb, all values 0-255
 rainbowColors = bytearray([
-	0  ,255,0  ,0,
-	25 ,255,230,0,
-	63 ,255,255,0,
-	100,0  ,255,0,
-	127,0  ,255,200,
-	159,0  ,255,255,
-	191,0  ,0  ,255,
-	224,255,0  ,255,
-	255,255,0  ,127,
+	0  ,255,0  ,0, 255,
+	25 ,255,230,0, 255,
+	63 ,255,255,0, 255,
+	100,0  ,255,0, 255,
+	127,0  ,255,200, 255,
+	159,0  ,255,255, 255,
+	191,0  ,0  ,255, 255,
+	224,255,0  ,255, 255,
+	255,255,0  ,127, 255,
+	#0, 255, 0, 0, 255,
+	#42, 255, 255, 0, 255,
+	#85, 0, 255, 0, 255,
+	#128, 0, 255, 255, 255,
+	#170, 0, 0, 255, 255,
+	#212, 255, 0, 255, 255,
+	#255, 255, 0, 0, 255,
 ])
 
 # effect loop